Finding the Third Proportional to 680,667.75 and 1,485,123.75

Step by Step Solution

1. Step 1: Write the proportion equation
   680,667.75 : 1,485,123.75 = 1,485,123.75 : x
2. Step 2: Convert to fraction form
   680,667.75/1,485,123.75 = 1,485,123.75/x
3. Step 3: Cross multiply
   680,667.75x = 1,485,123.75 × 1,485,123.75
4. Step 4: Simplify right side
   680,667.75x = 2,205,592,552,814.06
5. Step 5: Solve for x
   x = 2,205,592,552,814.06/680,667.75
6. Step 6: Final answer
   x = 3,240,336.50